If you are a VAT-registered business in Sri Lanka, the way you issue invoices has permanently changed. Under Gazette Extraordinary No. 2463/05 (17 November 2025), every VAT-registered person must now issue Tax Invoices in a strictly standardised format — effective 1 July 2026.
Getting the format wrong is not a minor inconvenience. Your customers could lose the right to claim their input VAT deduction, and your business could face penalties during an audit. The stakes are high — but complying does not have to be complicated.
taxcalculator.lk has built a completely free, browser-based VAT Tax Invoice Generator that produces a fully compliant invoice in under two minutes. No software to install, no signup required, no subscription fee.
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What Changed? Sri Lanka’s New VAT Invoice Format Explained
Before July 2026, businesses in Sri Lanka used their own custom invoice layouts. Some were simple Word documents; others were outputs from accounting software with varying field names, date formats, and number styles. The Inland Revenue Department received millions of invoices with inconsistent structures, making VAT audits slow, error-prone, and costly for everyone.
Gazette Extraordinary No. 2463/05, issued by the Commissioner General of Inland Revenue on 13 November 2025 and published on 17 November 2025, ends that era of inconsistency. It prescribes a single, mandatory format for every Tax Invoice issued by any VAT-registered person in Sri Lanka.
Here is what must now appear on every VAT Tax Invoice:
Mandatory Fields Under the New Format
| Field | Requirement |
|---|---|
| Invoice Title | Must display “TAX INVOICE” prominently |
| Serial Number | Structured, sequential numbering system |
| Date of Invoice | MM/DD/YYYY format only |
| Date of Delivery | MM/DD/YYYY format only |
| Supplier TIN | Taxpayer Identification Number mandatory |
| Supplier VAT Reg. No. | Mandatory for all registered suppliers |
| Supplier address & contact | Including telephone number |
| Purchaser name & address | Full details required |
| Purchaser TIN | Required if purchaser is VAT-registered |
| Place of Supply | Location from which delivery originates |
| Description of Supply | Clear description of goods or services |
| Quantity / Volume | Measurable amount of goods/services |
| Unit Price | Per unit price in LKR |
| VAT Rate | Rate applied (%) |
| Net Amount (excl. VAT) | Separate line — no blending with VAT |
| VAT Charged | Clearly separated from net amount |
| Total Consideration | Net + VAT combined total |
| Total in Words | Written-out amount in rupees |
| Mode of Payment | Cash / Cheque / Bank Transfer / Card / Online |
| Currency | LKR only — whole rupees, no cents |
Missing even one of these fields could render your invoice non-compliant, blocking your customer’s input VAT claim.
Why the “Whole Rupees, No Cents” Rule Matters
One of the most practically significant requirements in the gazette is that all monetary values must be stated in Sri Lankan Rupees without cents. This means you must round every amount to the nearest whole rupee before printing your invoice.
Most businesses used to include two decimal places (e.g., LKR 14,875.50). Going forward, that invoice is technically non-compliant. The correct format is LKR 14,876 (rounded).
Our VAT Invoice Generator handles this automatically. Every amount — unit price, net total, VAT charged, and total consideration — is rounded to the nearest whole rupee before it appears on your invoice.
The Risk of Getting It Wrong: Input VAT Recoverability
Here is the critical business reason to take this seriously: if your customer is a VAT-registered business and you issue them a non-compliant invoice, they may be unable to recover the input VAT they paid you.
The Inland Revenue Department uses the invoice as the primary document for input tax claims. A missing TIN, incorrect date format, or absent “place of supply” field is enough grounds for an auditor to question a claim. For high-value B2B transactions, this could mean your client bears a significant unexpected tax cost — and they may come back to you for it.
Issuing compliant invoices protects both you and your customers.
How to Use the Free VAT Invoice Generator
Our tool walks you through every mandatory field with clear labels and built-in guidance. Here is the process:
Step 1 — Enter Your Business Details Add your registered business name, address, TIN, and VAT Registration Number. You can optionally upload your logo.
Step 2 — Fill in Invoice Details The tool auto-generates a sequential serial number in the recommended format (PREFIX-YYYYMMDD-NNNN). Set your invoice date and delivery date — both are displayed automatically in the mandatory MM/DD/YYYY format.
Step 3 — Add Customer Information Enter the purchaser’s name, address, and their TIN and VAT Reg. No. if they are VAT-registered.
Step 4 — Add Line Items Add as many line items as you need. For each item, enter the description, quantity, unit price, and VAT rate. The tool calculates:
- Net amount per line
- VAT amount per line
- Net total (exclusive of VAT)
- Total VAT charged
- Grand total (Total Consideration)
- Total Consideration written in words
Step 5 — Print or Download Use Print / Save as PDF to save a PDF directly from your browser, or use Download HTML to save a standalone file you can reopen, reuse, or email.
The entire preview updates in real time as you type — you always see exactly what your customer will receive.
👉 Try the Free VAT Invoice Generator →
Who Needs to Use This?
If you are VAT-registered in Sri Lanka — regardless of your industry or business size — you are legally required to issue Tax Invoices in this format from 1 July 2026 onwards. This includes:
- SMEs and sole traders who are VAT-registered
- Large corporates and multinationals operating in Sri Lanka
- Accountants and bookkeepers preparing invoices on behalf of clients
- Retailers and wholesalers supplying to VAT-registered purchasers
- Service providers — consultants, IT firms, agencies, and professionals
- Manufacturers and exporters dealing with domestic VAT-registered customers
- Any business currently using Word, Excel, or older accounting software that has not been updated to the new format
If you are currently producing invoices in a legacy format, even from a recognised accounting system, you must verify that your software has been updated for the Gazette No. 2463/05 requirements before issuing another invoice.
What Happens If You Don’t Comply?
Failure to issue invoices in the prescribed format exposes your business to several risks:
- Audit penalties — The Inland Revenue Department can penalise non-compliant invoice issuers during routine or triggered audits.
- Customer disputes — Clients who cannot claim input VAT due to your non-compliant invoice may dispute payment or seek compensation.
- Reputational damage — Being flagged as non-compliant during an audit damages your credibility with partners and clients.
- Cascading compliance failures — If your customers cannot recover input VAT, the problem compounds across supply chains.
The simplest, lowest-cost solution is to switch to a compliant invoice format immediately.
Frequently Asked Questions
Q: Is the VAT Invoice Generator really free?
Yes, completely free. There is no trial period, no credit card required, and no subscription. Generate as many invoices as you need.
Q: What is the effective date for the new format?
The new format under Gazette Extraordinary No. 2463/05 is effective from 1 July 2026 for all VAT-registered persons in Sri Lanka.
Q: Does the tool handle the MM/DD/YYYY date format automatically?
Yes. You enter dates using a standard date picker, and the tool displays them in the mandated MM/DD/YYYY format on the printed invoice.
Q: What VAT rate should I use?
Sri Lanka’s standard VAT rate is 18%. You can enter any applicable rate per line item in the generator, including 0% for exempt or zero-rated supplies.
Q: Can I save and reuse my business details?
Each session starts fresh — your business details are not stored on our server. However, you can download the HTML version of any invoice and reopen it as a template for future use.
Q: What is a TIN and where do I find mine?
A TIN (Taxpayer Identification Number) is issued by the Inland Revenue Department of Sri Lanka when you register for taxes. You can find it on your IRD registration certificate or any previous tax correspondence.
Q: Does the generator work on mobile?
Yes. The tool is mobile-responsive and works on any modern smartphone or tablet browser.
Q: Can I issue invoices in a currency other than LKR?
No. The gazette mandates that all Tax Invoices must be issued in Sri Lankan Rupees (LKR). Foreign currency transactions should be converted to LKR at the applicable rate and stated in LKR on the invoice.
Q: Does the tool include a “Total in Words” field?
Yes. The generator automatically converts the numeric Total Consideration into written words (e.g., “Sri Lankan Rupees Four Hundred Fifty Thousand Only”) as required by the gazette.
Related Tools on taxcalculator.lk
- VAT Calculator Sri Lanka — Instantly calculate VAT at 18% on any amount
- Stock Verification Tool — Scan, count, and reconcile physical inventory against your books using any smartphone
Start Issuing Compliant Invoices Today
The deadline is here. Gazette No. 2463/05 is in force. Every VAT Tax Invoice you issue from 1 July 2026 must follow the new standardised format — or risk audit exposure and customer disputes over input VAT.
taxcalculator.lk has made compliance simple, free, and fast. Our VAT Invoice Generator takes less than two minutes and produces a print-ready, fully compliant invoice with every mandatory field populated correctly.
No software. No subscription. No excuses.
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